Emission Control System -- On-Vehicle Inspection |
- HINT:
- In a malfunction where the EGR system is always in, black or white smoke may emit from the exhaust pipe.
- If this occurs, inspect the EGR system (Toyota Fortuner RM000002RKA010X.html).
1. CHECK FOR LEAKS |
Visually check that the hoses, connections and gaskets have no cracks, leaks or damage.
- NOTICE:
- Detachment or other problems with the engine oil dipstick, filler cap, PCV hose and other components may cause the engine to run improperly.
- Air suction caused by disconnections, looseness or cracks in the parts of the air induction system between the throttle body and cylinder head will cause engine failure or engine malfunctions.
2. CHECK VACUUM PUMP ASSEMBLY |
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Disconnect the vacuum hose from the vacuum pump.
Connect the hose of a vacuum gauge to the pump.
Insert a plug into the other hose of the gauge.
Start the engine and warm it up for more than 2 minutes.
With the engine idling, check the negative pressure of the pump.
- Standard negative pressure:
- More than 86.7 kPa (650 mmHg, 26 in.Hg)
- HINT:
- The vacuum pump assembly is listed as one of the 200000 km (124000 mile) maintenance part. Make sure to disassemble and inspect it every 200000 km (124000 miles) and replace parts as necessary.
Remove the gauge from the pump.
Connect the hose to the pump with the clip.